Just Commodores Forum Community

It takes just a moment to join our fantastic community

Register

What can i do to make my VL more economical?

Discussion in 'Straight 6 Development And Modification' started by 202lx, Dec 21, 2008.

  1. 202lx

    202lx New Member

    Messages:
    10
    Likes Received:
    0
    Trophy Points:
    0
    Joined:
    Dec 19, 2008
    Location:
    Galwer SA
    Members Ride:
    LX SL sedan
    I got an auto VL wagon with just a standard 6 in it. What can i do to make it use less fuel?
     
  2. Panama

    Panama Member

    Messages:
    367
    Likes Received:
    3
    Trophy Points:
    18
    Joined:
    Aug 26, 2007
    Location:
    Perth
    Members Ride:
    '87 VL Calais with L67
    pump up your tyres and take all the useless crap out of it. don't hoon. thats about all i can think of
     
  3. 202lx

    202lx New Member

    Messages:
    10
    Likes Received:
    0
    Trophy Points:
    0
    Joined:
    Dec 19, 2008
    Location:
    Galwer SA
    Members Ride:
    LX SL sedan
    I was thinking of more what engine mods i could do. I have bashed out cats and highflow muffler. I think a pod filter would help a little bit. If i advanced the timing a little bit would that make much difference?
     
  4. Boonz

    Boonz Donating Member

    Messages:
    4,042
    Likes Received:
    46
    Trophy Points:
    0
    Joined:
    Jul 27, 2005
    Location:
    berri, south australia
    Members Ride:
    green 355 VG ute
    turbo it, usually makes it use less fuel....
     
  5. redcv6

    redcv6 supercharged intercooled

    Messages:
    532
    Likes Received:
    5
    Trophy Points:
    0
    Joined:
    Aug 21, 2006
    Location:
    Ringwood
    Members Ride:
    vy ss ute, diesel landcruiser 100s, hq panel van
    buy a scooter
     
  6. Tree cutter

    Tree cutter Tree cutter

    Messages:
    1,020
    Likes Received:
    8
    Trophy Points:
    38
    Joined:
    Apr 15, 2006
    Location:
    Mt Gambier SA
    Members Ride:
    VX Calais SuperchargedV6
    Extractors will help a little with fuel economy. Make sure your oxygen sensor is working properly because it will drink fuel if the oxy sensor doesn't work. Make sure your temp sensor is working properly and your thermostat closes off when the engine is cold so the engine warms up quickly. Give it a tune up so it is running nice and smoothe and change the fuel filter.
     
  7. BLOWN R8

    BLOWN R8 WHISTLE BY HARROP

    Messages:
    432
    Likes Received:
    3
    Trophy Points:
    0
    Joined:
    Aug 1, 2008
    Location:
    WESTSIDE SA
    Members Ride:
    BLOWN VZ R8 MALOO, LC 406, HT PREM, VX SS
    leave it in the shed!
     
  8. nasty1

    nasty1 New Member

    Messages:
    1,739
    Likes Received:
    2
    Trophy Points:
    0
    Joined:
    Feb 16, 2008
    Location:
    adelaide
    Members Ride:
    vy2 clubsport
    get gas put on it lol
     
  9. 202lx

    202lx New Member

    Messages:
    10
    Likes Received:
    0
    Trophy Points:
    0
    Joined:
    Dec 19, 2008
    Location:
    Galwer SA
    Members Ride:
    LX SL sedan
    thanks for the real reply tree cutter. How do i check if my oxy sensor to see if its working properly?
    Also, i have heard from my mate who is a qualified mechanic that by putting a hotter thermostat in the engine (thermostat that opens up later) it will use less fuel by tricking the computer into thinking that its running lean or something. Is that right?
     
  10. savage1987

    savage1987 Donating Member

    Messages:
    3,660
    Likes Received:
    31
    Trophy Points:
    48
    Joined:
    May 8, 2005
    Location:
    Townsville
    Members Ride:
    LS1 VN + WK Grange 0010 + HPW VX SS
    Don't bother with the thermostat crap, if you want it running lean get it tuned lean. That's what I did in my VN and it uses a fair bit less fuel now.

    Also, honestly, bashed out catalytic converter? Why? There is no reason for this, you're just spewing all sorts of toxic **** out your exhaust pipe.
     
  11. Bax

    Bax Projecting

    Messages:
    3,502
    Likes Received:
    36
    Trophy Points:
    0
    Joined:
    Jan 9, 2004
    Location:
    QLD
    Members Ride:
    Nothing
    Not worth the hassle with the thermo.

    Keep it serviced as well. Good clean plugs, good oil, clean filters etc will help.

    Even running premium will help.

    And agreed with the above. Replace your cat, if it's just an n/a put a standard cat on there, wouldn't even worry about the hiflow.
     
  12. 202lx

    202lx New Member

    Messages:
    10
    Likes Received:
    0
    Trophy Points:
    0
    Joined:
    Dec 19, 2008
    Location:
    Galwer SA
    Members Ride:
    LX SL sedan
    why isnt it worth the hassle with the thermostat? it will make it use less fuel right? after all, its only two bolts...
     
  13. 202lx

    202lx New Member

    Messages:
    10
    Likes Received:
    0
    Trophy Points:
    0
    Joined:
    Dec 19, 2008
    Location:
    Galwer SA
    Members Ride:
    LX SL sedan
    also, how do i check my oxy sensor?
     
  14. padrickz88

    padrickz88 Rick =]

    Messages:
    1,555
    Likes Received:
    36
    Trophy Points:
    48
    Joined:
    Dec 15, 2005
    Location:
    sunshine, melbourne
    Members Ride:
    VN V6, nothing special
    check your manual, it should say in there :)

    -do a service 1st...
    -replace your cat because its not doing anything besides spitting out fumes that should be filtered (will stop your car sounding tinny aswell)
    -CAI
    -tune?

    and exactly how many km's are you getting to a tank? so people can tell you if thats normal or crap :)
     
  15. 202lx

    202lx New Member

    Messages:
    10
    Likes Received:
    0
    Trophy Points:
    0
    Joined:
    Dec 19, 2008
    Location:
    Galwer SA
    Members Ride:
    LX SL sedan
    i dont know what the km are exactly but i think it would around 250 - 300km from a wagon tank (62 liters i think)
     
  16. savage1987

    savage1987 Donating Member

    Messages:
    3,660
    Likes Received:
    31
    Trophy Points:
    48
    Joined:
    May 8, 2005
    Location:
    Townsville
    Members Ride:
    LS1 VN + WK Grange 0010 + HPW VX SS
    lol that's crap
    definitely get checking those sensors... look it up, there's a few how-tos for VL sensors around here and the SC forum.

    Sam
     
  17. VL Berlina 5speed

    VL Berlina 5speed Apprentice Panel Pusher

    Messages:
    2,684
    Likes Received:
    29
    Trophy Points:
    0
    Joined:
    Oct 3, 2005
    Location:
    Adelaide
    Members Ride:
    Project VL Show car, VS Exec, VY Ute, YZ250F
    i was getting avg 600km a tank in my berlina, and a few times over 600

    it was manual, i drive like a granny:p
    full exhaust, high flow cat, extractor etc
    CAI under the guard, k&n panel filter, custom intake piping
    every sensor was new, temp sensor, o2 sensor, CAS always made sure no errors on comp
    timing was on mark, not advanced, 95 ron fuel
    new leads, plugs and service every 5000km
    .
    thats bassically how i had my econemy so good, but i was changing gears at 1200rpm lol this is my normal driving style but when didnt cause any labouring on the motor
    on flat cruisng at 50km/h in 5th:yeah:
     
  18. HARVZ-6

    HARVZ-6 New Member

    Messages:
    826
    Likes Received:
    1
    Trophy Points:
    0
    Joined:
    Nov 2, 2008
    Location:
    Riverton sa
    Members Ride:
    VT spac super6
    i was getting 450-600km from a tank.. this was country driving but still driving it fairly hard

    5 speed manual
    extractors, straight into single muffler
    19degrees advanced timing
    CAI (under guard to bumper)

    you CAN adjust fuel/air mixture yourself, remove the kick panel to reveal the computer and start the engine... the led's should flash together.. if not on the AFM theres a small round cap near the plug, pry it out and turn the screw inside say 1/8turn at a time until the leds flash together...
     
  19. VL Berlina 5speed

    VL Berlina 5speed Apprentice Panel Pusher

    Messages:
    2,684
    Likes Received:
    29
    Trophy Points:
    0
    Joined:
    Oct 3, 2005
    Location:
    Adelaide
    Members Ride:
    Project VL Show car, VS Exec, VY Ute, YZ250F
    or you set it to factory

    multi meter, prod in plug cable 6 and 1
    engine off and read ohms, adjust it till it reads 362ohm (think thats factory)
     
  20. HARVZ-6

    HARVZ-6 New Member

    Messages:
    826
    Likes Received:
    1
    Trophy Points:
    0
    Joined:
    Nov 2, 2008
    Location:
    Riverton sa
    Members Ride:
    VT spac super6
    either way its all in the workshop manual :p
     

Share This Page